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Communication parameters
2
FUNCTIONS
<Setting>
To make communication between the personal computer and inverter, initialization of
the communication specifications must be made to the inverter. If initial setting is not
made or there is a setting fault, data transfer cannot be made.
*After making the initial setting of the parameters, always reset the inverter. After you
have changed the communication-related parameters, communication cannot be
made until the inverter is reset.
Parameter Description Setting Description
n1
Communication
station number
0 to 31
Station number specified for communication from
the RS-485 connector.
Set the inverter station numbers when two or more
inverters are connected to one personal computer.
n2
Communication
speed
48 4800bps
96 9600bps
192 19200bps
n3
Stop bit length/
data length
8 bits
0 Stop bit length 1 bit
1 Stop bit length 2 bits
7 bits
10 Stop bit length 1 bit
11 Stop bit length 2 bits
n4
Parity check
presence/
absence
0Absent
1 Odd parity present
2 Even parity present
n5
Number of
communication
retries
0 to 10
Set the permissible number of retries at occurrence
of a data receive error.
If the number of consecutive errors exceeds the
permissible value, the inverter will come to an alarm
stop (OPT).
---
(65535)
If a communication error occurs, the inverter will not
come to an alarm stop. At this time, the inverter can
be coasted to a stop by MRS or RES input.
During a communication error (H0 to H5), the minor
fault signal (LF) is switched on. Allocate the used
terminal with any of Pr. 64, Pr. 65 (output terminal
function selection).
n6
Communication
check time
interval
0 No communication
0.1 to 999
Set the communication check time [s] interval.
If a no-communication state persists for longer than
the permissible time, the inverter will come to an
alarm stop (OPT).
--- Communication check suspension.
n7
Waiting time
setting
0 to 150
Set the waiting time between data transmission to
the inverter and response.
--- Set with communication data.
n11 CR/LF selection
0 Without CR/LF
1 With CR, without LF
2With CR/LF